<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>

    <!-- 页面主体区 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollaspe ? '64px' : '200px'">
        <div class="toggle-button" @click="togglecollaspe">|||</div>
        <!--侧边栏菜单区  -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF" :unique-opened='true' :collapse='isCollaspe' :collapse-transition='false' :router='true'
          :default-active=' activePath'>
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <!-- i是它的图标 -->
              <i :class=" iconsObj[item.id]"></i>
              <!-- span是它的文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path  " v-for="subItem in item.children" :key="subItem.id" @click="saveNewState('/' + subItem.path)">
              <template slot="title">
              <!-- i是它的图标 -->
              <i class="el-icon-menu"></i>
              <!-- span是它的文本 -->
              <span>{{subItem.authName}}</span>
            </template></el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main><router-view></router-view></el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'

      },
      // 是否折叠
      isCollaspe: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    this.getMeauList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMeauList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.console.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    // 点击按钮，切换菜单的折叠与展开
    togglecollaspe() {
      this.isCollaspe = !this.isCollaspe
    },
    // 保存链接的激活状态
    saveNewState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }

  }
}
</script>

<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
    border-right: 0px ;
  }
}
.el-main {
  background-color: #eaedf1;
}
.home-container {
  height: 100%;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
